I TOOK MOST CARE TO PREPARE THIS TENTATIVE ANSWER KEY

IF ANY WRONG ANSWERS MAIL ME OR GIVE YOUR COMMENT IN COMMENT SECTION

26.B

27.A

28. Given answers are Wrong.Explanation:BC 1935 DDC 1876 LCC
1904 UDC 1905(FRENCH)(English
1939)The responsibility for publishing a full edition of UDC in English was
initially taken by the British Society for International Bibliography and ASLIB
together and several parts were published by 1939.**IGNOU